Refrigerant Gas Suppliers™ does not approve the use of industrial or special‑grade oxygen for medical purposes. These gases are filled according to different standards, and they should never be inhaled or used in clinical settings. In contrast, medical oxygen is a licensed pharmaceutical product. Therefore, only approved healthcare professionals can supply it for patient care.

If you need medical oxygen for personal use, you must obtain a prescription from your GP. Once prescribed, your regional supplier will provide the oxygen safely and in compliance with medical regulations. As a result, patients receive oxygen that meets strict quality standards, ensuring both safety and effectiveness.

Pharmaceutical Grade Oxygen (Pharma-grade O2) gas cylinder.

Pharmaceutical Grade Oxygen Grade Classification

Pure gases are classified by grade.

The first digit of the grade classification indicates the ‘number of nines’ purity, e.g. N3.0 = 99.9% purity.

The second digit is the number following the last nine, e.g. N4.6 helium has a guaranteed minimum purity level of 99.996%.

Product name: Oxygen, compressed
Other Name: Oxygen (Special Gases), Oxygen (and High Purity Oxygen)
Additional identification
Chemical name: Oxygen
Chemical formula: O2
INDEX No. 008-001-00-8
CAS-No. 7782-44-7
EC No. 231-956-9
REACH Registration No. Listed in Annex IV/V of Regulation (EC) No. 1907/2006 (REACH),
exempted from registration.

Chemical name Oxygen
INDEX No.: 008-001-00-8
CAS-No.: 7782-44-7
EC No.: 231-956-9
REACH Registration No.: Listed in Annex IV/V of Regulation (EC) No. 1907/2006 (REACH), exempted from
registration.
Purity: 100%
The purity of the substance in this section is used for classification only and does
not represent the actual purity of the substance as supplied, for which other
documentation should be consulted.
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